Improvement in devices for preventing overwinding of ropes on shafts



H. O. HARRISON.

Device for Preventing 0verwinding-- of Ropes on Shafts, 8E0.

Patented Jan. 7,1879.

lwcnforr N-PTTERS. FHOTD-LITNDGRAPHER. WASNMGTDN D C UNITED STATES PATENT OEEIoE.

HARRY O. HARRISON, OF EUREKA, NEVADA.

IMPROVEMENT IN DEVICES FOR PREVENTING OVERWINDING OF ROPES 0N SHAFTS, 8w.

Specification forming part of Letters Patent No. 211, I55; dated January 7, 1879 application filed October 17, 1878.

To all whom "it may concern:

Be it known that I, HARRY O. HARRISON, of the town of Eureka, in the county of Eureka and State of Nevada, have invented an improvement or device in the machinery now in use to prevent the overwinding of ropes in shafts of mines, thus saving lives and property, of which the following is a specification:

U 0 represent the cross-timber placed be-' tween the guides, about three feet from the sheaves, supporting the bellshaped casting D. B B represent the wrought-iron shell of the hook; A, the open space in which the arms F F are placed. D is the iron casting in which the pawls E E fit, which catch the ratehets H G, the link fastened to the arms F F.

When the cage is run up too far, the pawls E E catch the ratchets H H, at the same time permitting the arms F F to press the sides of shell B B and arms F F with the link Gr,Sl1bstantially as described.

3. The combination of the entire parts, con sisting of the shell B B, ratchets H H, arms F F, and link G, with the bell-shaped part D,

having attached thereto the pawls E E, substantially as described.

HARRY HARRISON.

WVitnesses:

E. J. BUTLER, T. J. MAUIIN. 

